Is Linux Market Growth Stagnated (At Least)?

No matter how hard I’ll try, I will never be able to determine what is the real number of Linux users, and share it with you.

I will begin with data from the popular W3Schools.com web developer information website. What we see here is the Linux market share from 2003 to 2012. The website provides monthly statistics but I took the liberty in creating a diagram showing the average value for every year to get the whole picture.